Vertex-degree-based molecular structure descriptors of benzenoid systems and phenylenes
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چکیده
منابع مشابه
Vertex-degree-based molecular structure descriptors of benzenoid systems and phenylenes
1031 Vertex-degree-based molecular structure descriptors of benzenoid systems and phenylenes IVAN GUTMAN* and BORIS FURTULA** Faculty of Science, University of Kragujevac, P. O. Box 60, 34000 Kragujevac, Serbia (Received 12 December 2011) Abstract. Several recently published papers report expressions for various vertex-degree-based molecular structure descriptors of benzenoid systems and phenyl...
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The edge version of Szeged index and vertex version of PI index are defined very recently. They are similar to edge-PI and vertex-Szeged indices, respectively. The different versions of Szeged and PIindices are the most important topological indices defined in Chemistry. In this paper, we compute the edge-Szeged and vertex-PIindices of some important classes of benzenoid systems.
متن کاملThe Geometric-Arithmetic Index of Benzenoid Systems and Phenylenes
The geometric-arithmetic index of graph G is defined as GA(G) = ∑ uv∈E(G) 2 √ dudv du+dv , du (or dv) is the degree the vertex u (or v). The GA index of benzenoid systems and phenylenes are computed, a simple relation is established between the geometric-arithmetic of a phenylene and the corresponding hexagonal squeeze in this paper. Mathematics Subject Classification: 05C05, 05C12
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ژورنال
عنوان ژورنال: Journal of the Serbian Chemical Society
سال: 2012
ISSN: 0352-5139,1820-7421
DOI: 10.2298/jsc111212029g